FRACTIONS


Finding the Least Common Denominator

When two or more Fractions have Different Denominators,

the Least Common Denominator must be determined.

The Least Common Denominator is the Least Number that

can be evenly divided by all Denominators.

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2 5

1 2

The Least Common Denominator of these fractions is 10.

10 ÷ 5 = 2

10 ÷ 2 = 5

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1 4

3 8

The Least Common Denominator of these fractions is 8.

8 ÷ 4 = 2

8 ÷ 8 = 1

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RULE

Finding the Least Common Denominator of two or

more Fractions

The Least Common Denominator is the Smallest Number

that can be evenly divided by Both Denominators.